重點講解：
1. a total of 總數；總額；合計；
例句：A total of twenty letters were received last month.
上個月共收到20封信UKnqKu|(Q)#~DsKfRtn@。
2. amount to 合計；共計；
例句：His investments amount to five million dollars.
他的投資額達五百萬元~JLK2rbT.jzaX)hCvt。
3. according to 據…所說；按…所載；
例句：According to industry statistics, the assets of money funds have grown sharply since the credit crisis began to intensify last summer.
據行業統計數據顯示，自去年夏天信貸危機開始嚴重起貨幣基金的資產就開始急劇增長plnO,PKotwf|cG。
4. be based on 以…為基礎；
例句：His theory is merely based on supposition.
他的理論只是根據推測而提出的xl4~TMRm_0Q%4Cs。
5. deal with 處理；應付；與…打交道；
例句：Firstly, let us deal with the most important issue.
首先讓我們來處理最緊要的問題V&OumpTvJ~]-。